Clean up appveyor config
Clean up appveyor config

HDF5 is now in conda default
Drop HDF5 1.8
Drop mock depency

PyTables/PyTables,FrancescAlted/PyTables,avalentino/PyTables,PyTables/PyTables,FrancescAlted/PyTables,avalentino/PyTables,PyTables/PyTables,avalentino/PyTables,FrancescAlted/PyTables